Vaccine cold chain

[hevysrf]

Any one involved with the vaccines?
-70 C looks like a tough target to someone used to -12f supermarket ice cream and still has nightmares from those -40f "Dippin Dots " boxes they used to scatter around amusement parks.

[Answer-Man]

I hope someone answers, I think it will be pretty interesting how they will do this, this has got to be one of the first questions they (the vaccine makers and government) answer. I heard special freezer trucks driven around the country, I wonder where they will get the trucks from?

[2sac]

I hope someone answers, I think it will be pretty interesting how they will do this, this has got to be one of the first questions they (the vaccine makers and government) answer. I heard special freezer trucks driven around the country, I wonder where they will get the trucks from?

My brother is an owner operator and runs a reefer trailer. He's looking into this right now. He hauls quite a bit of pharmaceuticals because it pays extremely well.

[pecmsg]

N2
CO2
Even Dry Ice

The equipment is already out there.

[leslie cook]

I work at a hospital. They just bought 3 extra ultra lows which go to -70 c. We probably already have 30 of them already for different reasons

[hevysrf]

I'm thinking large storage box, you can pack in dry ice to give you a couple degrees TD, but liquid co2 wont go that low.
Are fan coil units used at those ultra low temps? Would something like a Munters Ice Dry help with coil frost build up?

[jbhenergy]

I know zero about stuff that cold but from my reading here wouldn’t it require a cascade system?


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[szw21]

I know zero about stuff that cold but from my reading here wouldn’t it require a cascade system?


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Yes that's what I was thinking as well.

[pecmsg]

-80 is pushing single stage units.
Cascade can hit -160 I believe

[leslie cook]

All of ours are cascade systems with no fans

[coolerik]

All the -80s I’ve worked on have been cascade with static coils. Also worked on a -160 that was autocascade with one scroll compressor and a crazy blend of secret freezy juice.


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[Gdh33]

Was wondering about the refer trailers as well. We have a few ULT (-80C) freezers at work. Cascade system with no evap fans. Special blend of refrigerants.

Maybe use ULT freezer skids in trailers? Liquid nitrogen?

[rkevins]

I also work in a hospital we have -70C freezers in the lab, and OR.

[COOLJIM]

We had -80 c cabinets. piped to a flask of liquid nitrogen , if temp rose a solenoid valve opened and a controlled amount of liquid injected kept the temp down . There are a lot of manufactures out there USA and imports of Ultra Low Temp , will be a massive boost in sales

[madhat]

There’s a lot more Cascade System, than you would think. Also there are ultra cold shipping containers, Cascade Shipping Containers. Probably most of the vaccines will be shipped by Air, at high altitudes the air is very Cold, and they can bypass the Cargo hold heat. I’m sure other Medical Supplies are already being shipped via ultra-low temperatures. At my a state gov. job there were Four Upright Cascade Refrigerators, the Size of a large home upright. One of my Doctors even has a Cascade Chest Style Unit. It’s in his Ultrasound Mini Surgery Suite.

[BALloyd]

There are already a couple companies making small portable -80C freezers that look like a portable cooler. It was on the news the other day.

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[thmoops]

Changed some compressors on a few ultalows back in the day. The tech has been around for a while in Pharma.